You realize that steam can ban you and you can legally be arrested, which in turn would mean all of your stuff can be confiscated. You're breaking importing laws and you just openly admitted to it on a forum.
It would be nice if people stopped making generalisations about Australian law without actually doing the research first. The classification system is covered by state law. What is or is not and offence varies from state to state.
The legal status of a steam key /download as an import is a fair bit more complex, especially if he simply bought a key online (without committing fraud to do so, if he used a vpn and a fake address then things get messy) and is not importing a physical copy. I'm not going to comment on whether that hypothetical would ultimately be an offence as (a)
I'm not a lawyer, (b) there really is too little information to go on.
I'm still looking though the case law to see if there is anything about communications counting as imports. It really is an interesting legal question. It is not, however, a simple one.
The gifting options are not there so you can illegally import games.
Consider the following hypothetical: A lives in state X. In X, it is an offence to sell RC, but it is not an offence to buy or own it. B lives in country Y, where there are no relevant restrictions on content. Suppose also that in state X, selling RC is considered to be a lot worse than importing RC.
If B buys RC from S in Y, then gifts (for no consideration or remuneration - purely out of the goodness of their heart) it to A, what offence has been committed?
At most you're looking at importation of RC, but that depends on the definition of imported. B was not subject to the laws of X when they bought RC from S. A did not give anything (money or exchange) to B in consideration for RC, so it was not a sale. Possession is not an offence in X.
Obviously this hypothetical is rather unrealistic. Most 'trades' are bilateral; they involve something being given by both sides - and so may (I'm not going to say are as I AM NOT A LAWYER) count as sales.
As I said, I am not a lawyer. I have no idea whether communication of valuable data can be an import (although I'm looking into it). but blanket statements that such-and-such is illegal in Australia are generalisations, and almost certainly are missing some nuance or another.
I acknowledge that
I AM NOT A LAWYER, everything I say is a generalisation, and should not be relied upon. That said, you really should not make statements about Australian law unless you can back them up and you make your expertise or lack thereof clear.